Secondary battery.



No. 642,442. Patented A pr. I0, i900. C. J. COLEMAN. SECONDARY BATTERY.'

(Application filed Oct. 2, 1899.)

( Nu Model.)

ma noms versus cn. morrgurno. wAsumL-.Tou n c l NITED STATES PATENTOFFICE.

CLYDE COLEMAN, OF CHICAGO, ILLINOIS.

SECON DARY BATTERY.

i SPECIFICATION forming '15m of Letters Patent No. 647,442, dated April1o, ieo.

Application filed October 2 1899.

T0 (2l/ZZ whom, it may conceive."

Be it known that I, CLYDE J. COLEMAN, a citizen of the United States,and a resident of Chicago, in the county of Cook andState of Illinois,have invented certain newand useful Improvements in Secondary Batteries;and I do hereby declare the following to be a full, clear, and exactdescriptionof the same, reference being had to the accompanyingdrawings, forming a part of this specification.

The present invention relates to that type of secondary batteries inwhich the active material is inclosed within a perforated casing ofconductive material, an example of which forms the subject-matter of myapplication for Letters Patent filed August 3, 1899, Serial No. 726,014.

rPhe object of the Vpresent improvement is to provide a simple,effective, and durable means for connecting a series of foraminoustubular casings or holders to a common connectin g strip or bar toconstitute an electrode for secondary batteries, as will hereinaftermore fully appear, and be more particularly pointed out in the claims.

In the accompanying drawings, illustrative of the present-invention,Figure l is a fragmentary side elevation of asecondary battery electrodeembodying the present invention, theconnecting strip or bar being shownin longitudinal section; Fig. 2, a fragmentary transverse sectionalelevation; Fig. 3, a detail longitudinal section of a portion of theconnecting strip or bar in a detached condition, and Fig. 4 across-section of the same.

Similar numerals of reference indicate like parts in the differentviews.

As illustrated, the secondary-battery electrode of the presentimprovement will comprise a series of elongated tubular casings orholders l, formed of perforated lead tubing or other like conductingmaterial and arranged in parallel and separated relation, with theirupper ends connected together by a conducting strip or bar 2, thegeneral arrangement being substantially the saine as that set forth inmy aforesaid prior application, Serial No. 726,014.

The present improvement comprises the formation of the 'connecting baror strip 2 of a folded or inverted-U shape, the crown portion of whichis formed with elongated slots Serial No. 732,356. (No model.)

3 to receive the extreme upper ends of the casing or holders 1, spacebeing left between the two vertical members of the connectingstrip toreceive the upper ends of the holders or casings l, which are flattenedtogether, as shown, to form a fiat neck at the upper end of suchcasings.` With such construction the assemblage ofthe parts is renderedvery easy, and an extended surface contact is afforded, which contactcan be rendered very perfect with regard to electrical conductivity byfurther compression of the assembled parts to'- getherl With the ends ofthe casings or housings 1 occupying the slots 3 in the connecting barsor strips 2 and in an exposed condition at the top surface of the' samea fusion of the different parts can be very readily and safely effectedto attain still greater conductive unoin of the parts.

The series of tubular and perforated cas- I ings or holders l are filledwith loose active materiahsuch as oxid of lead, to constitute thecompleted battery-electrode, as usual in the present type of secondarybattery.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In-a secondary battery, the combination of a perforatedconducting-casin g for containing the active material and provided witha flattened upper end or neck, and a connecting strip or bar having aninverted-U shape and adapted to receive the flat neck of the casin gbetween its vertical members, substantially as set forth.

2. In a secondary battery, the combination of a series of perforatedconducting-casings for containing the active material, and provided withflattened upper ends or necks, and a connecting strip or bar common tothe series and having an inverted-U shape and adapted to receive theflat necks of the series of casings between its vertical members,substantially as set forth.

3. In a secondary battery, the combination of a perforatedconducting-casing for containing the active material and provided with aiattened upper end or neck, and a connecting strip or bar having aninverted-U shape and formed with an elongated orifice in its crownportion, the flattened neck of the cas- IOO 1o formed with a series ofelongated orifices in its crown portion, the flattened necks of theseries of casings being adapted to it said orices and lie between thevertical members of the connecting bar or strip, substantially as setforth.

In testimony whereof Witness my hand this 2d day of September, 1899.

QLYDE J. COLEMAN.

In presence of- RoBERT BURNS, HENRY A. NOTT.

